#include <stdio.h>
#include <stdlib.h>

#define PI 3.14
int main(int argc, char *argv[]) {
  /* float radius = 7.0;
  printf("请输入圆的半径：");
  scanf("%f", &radius);
  float area = PI * radius * radius;
  printf("圆的面积是：%f", area); */

  /* int a;
  int b;
  int c;
  printf("请输入三个整数：");
  scanf("%d%d%d", &a, &b, &c);
  int r = a * b * c;
  printf("result=%d", r); */

  /* char c1 = '2';
  putchar(c1); */

  char str[] = {"china"};
  puts(str);
  char str2[15];
  printf("请输入您的姓名：");
  fgets(str2, sizeof(str2), stdin);
  puts(str2);
  return EXIT_SUCCESS;
}
